Meet the engineers.

Our team of certified coaches combines extensive athletic experience and strong academic backgrounds to engineer record-breaking results for our clients. Having been trained in the TCBOOST Sports Performance approach of breaking down sports performance and fitness to its core components, our speed coaching staff will take you through a development plan that will maximize your potential in sports and life. Our coaches are trained to place a heavy emphasis on perfecting movement mechanics throughout our training programs. We understand that possessing great mechanics will result in reduced injury and peak performance. Having competed ourselves at the collegiate or professional level, and having coached athletes for the past 15 years, we are uniquely qualified to help you develop the intangible character traits that will lead to success not only in athletics, but in the arena of life.


Owner, Founder, and Director of Training

Tommy Christian, Owner and Director of Training, is one of the top sports performance coaches in the country. He started his sports performance career at Northwestern University as the Assistant Director of Strength & Conditioning (2000-2002). His role expanded to take over all the speed development duties for the football program and under his first season in this role, the team saw an average decrease in 40 yd times of .15 seconds. Tommy broke off from NU to begin the process of growing TCBOOST in 2002, although he has continued to aid as a contract coach and consultant for NU football ever since. Over the past 15 years, Tommy has trained more than 600 Division 1 athletes, 150 players for the NFL Draft, 4 NFL Pro-Bowl players and over 40 other professional athletes ranging from the NFL, NBA, MLB, WNBA and Rugby Union. Tommy is the former starting inside linebacker for the Wildcats under Coach Gary Barnett (1992). During his playing career at Northwestern he was the top Iron Cat point winner for his combination of speed, strength, explosiveness, and stamina. A Certified Strength and Conditioning Specialist (CSCS) with the National Strength and Conditioning Association (NSCA), Tommy also holds the Etcheberry Certification for Tennis. Pairing an extensive athletic background and coaching experience with a degree in engineering, Tommy has a uniquely analytical approach to developing performance in athletes of all ages.


Director of Coaching

Director of  Adult Fitness

Strength Development Engineer

Steve Breitenstein, Director of Coaching, has been with TCBOOST since 2012. Steve is a Certified Strength and Conditioning Specialist (CSCS), an American Council on Exercise Certified Personal Trainer (ACE-CPT), and ASEP Coaching Certifed. Coach Breitenstein played basketball at McHenry County College before transfering to University of Illinois – Chicago and graduated with a BS in Kinesiology. Steve coached high school and AAU basketball for 6 years. He also was a personal trainer and group fitness instructor at the YMCA for 3 1/2 years. The ages of Steve’s clients have ranged from 8 years old all the way up to 84 years old, demonstrating the ability to truly work with people of all ages and levels. Steve also supervises the weightroom at Glenbrook North High School.


Jonathan Rodriguez

Sports Performance Specialist

Jonathan Rodriguez has been coaching with TCBOOST since August 2015.  He received his undergraduate degree at the University of Wisconsin-Stevens Point in Athletic Training with an emphasis in Strength and Conditioning. Jonathan also has his Master’s degree in Athletic Training from Ohio University, where he was heavily involved in evidence-based research, orthopedic assessment, therapeutic exercise, and strength and conditioning. Jonathan worked with Ohio Valley University’s Women’s volleyball and Men’s basketball team as their strength and conditioning coach. Jonathan has certifications in FMS 2 (Functional Movement Systems), ASTYM (Augmented Soft Tissue Mobilization), and as a Weight Management Assessor. He currently supervises the weight room at Glenbrook South and Glenbrook North, and coaches the youth/ADP classes at TCBOOST.

Allie Boudreau

Sports Performance Specialist

Allie began as a coach at TCBOOST in 2016. She hails from Deerfield, IL and attended college at Illinois Wesleyan University where she majored in accounting and ran 4 years of varsity track and field.  She was named captain for the last 2 years of her collegiate career. She was also an 8x All-American, 8x Academic All American, 2015 NCAA Track and Field National Champion in the Pentathlon, and 2015 USTFCCCA Midwest Field Athlete of the Year. Allie holds a CSCS and USAW Level 1 Sports Performance Coach certification. Besides being an important member at TCBOOST, Allie also is a football strength and conditioning intern at Northwestern University.

Erwin Mendoza

Sports Performance Specialist

Erwin Mendoza began coaching at TCBOOST in 2016. He attended the University of Illinois-Chicago where he received his degree in biology. In high school, Erwin was a three year captain of the track and field team and qualified for the IHSA state championships as a member of the 4x400m team.  Erwin has also competed in the United States Powerlifting Federation State Championships where he won first place in the 75kg men’s division in 2016 and the 2017 USPA Chicago Fit Expo Meet where he also finished a first in his division. Erwin is currently working towards a certification as a Certified Strength and Conditioning Specialist (CSCS) and, aside from being an important member of the TCBOOST team, Erwin is also a Physical Therapy Technician at React Physical Therapy.

Zachery Nauert

Sports Performance Specialist

Attended the University of Illinois-Chicago and received a bachelor’s degree in Kinesiology with a concentration in Exercise Science and Health Promotion. Played hockey and lacrosse for Evanston High School and was All-State in hockey during the ’09-’10 season. Played one year of hockey for Hebron Academy in Maine, in the Division 1 NEPSIHA league. Played a short stint of lacrosse for Adrian college (D3) before transferring to UIC. Has been coaching youth hockey for 7 years and currently in his 3rd season as the JV head hockey coach at Evanston High School, and going on his 3rd year as a youth lacrosse coach. Currently holds a USA hockey level 4 coach certification and working towards his level 5. Will be sitting for my Certified Strength and Conditioning Specialist (CSCS) in December.

Matt Tometz

Sports Performance Specialist

Matt began interning at TCBOOST in the summer of 2016 and is now a coach as of the summer of 2017. He is receiving his undergraduate degree in Exercise Science from Truman State University. He is a player on the baseball there, helping his team reach and compete in the NCAA DII 2015 Baseball World Series. At Truman, Matt has conducted research called “Case Study: Improving 400m Time” and currently coaches a class called “Need for Speed” offered for students to take. His accomplishments include being Academic All-Conference three times (thus far) and being named the President of the Student-Athlete Advisory Committee. He is working towards becoming a Certified Strength and Conditioning Specialist upon graduation.

Joseph Zimmermann

Director of Marketing & Sales

Joe Zimmermann has been with TCBOOST since October 2013.  He received his undergraduate degree at UW-Whitewater in English Education.  After teaching at the high school level in Las Vegas for 5 years, Joe moved back to Chicago to attend Northwestern University and graduated with his masters in 2014.  Joe was the head varsity coach of the Desert Pines HS wrestling team in Las Vegas for 5 years, where he won the Sunrise Region Coach of the Year in 2011.  He was also the captain and president of his college rugby club, which was a long, long time ago.  Nowadays, he spends his time with his wife and new born daughter.

Vicky Junge

Customer Service Specialist

Vicky has been connected to TCBOOST since 2002 when Tommy began training her daughter, Jesse Adler, who was a highly ranked USTA player. Tommy continued to work with Jesse throughout her  playing career at New Trier HS & Dartmouth College. Vicky’s daughter Casey, who was a walk on lacrosse player at Colgate University, credits TCBOOST for getting her ready to compete at the Division I level. In addition, Vicky’s son Jack Junge, who was an individual IHSA State Champion golfer and two-time State hockey champion goalie at New Trier High School, has trained with TCBOOST and gone on to play college golf at Trinity College (CT) where he finished his freshman year as an All-American. Vicky’s husband Roger is the Director of Racquet Sports at Lake Shore Country Club.

Vicky graduated from Northwestern University with a B.S. in Communication and worked as Commercial Banking Vice President before taking a hiatus to raise her children.

After working for several years at the USTA Nielsen Pro Tennis Tournament in Winnetka, Vicky chose to return to the workforce full time and working at TCBOOST seemed the natural fit.